- adding osGetAgents() which returns a list of all avatars in the region

in which the script is running.

 -  found a bag of space characters under my desk, thought i'd donate them
    to the JSON OSSL function (aka clean up)

OpenSim/Region/ScriptEngine/Shared/Api/Interface/IOSSL_Api.cs

@@ -69,6 +69,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Interfaces
 
         // Avatar Info Commands
         string osGetAgentIP(string agent);
+        LSL_List osGetAgents(); 
 
         // Teleport commands
         void osTeleportAgent(string agent, string regionName, LSL_Types.Vector3 position, LSL_Types.Vector3 lookat);